1 What is MS-IR?

Brand: MS-IR

Generic: Morphine Sulfate

MS-IR is a drug used for the relief of moderate to severe pain. This drug is available as a tablet containing 15 mg, 30 mg or 100 mg of morphine sulfate. It is also available as an oral solution containing 10 mg or 20 mg of morphine sulfate.


You should read the product information leaflet before using this medication. If you have any questions, ask your doctor or pharmacist.

This medication should be taken by mouth as instructed by your doctor. Do not crush or chew the drug because it may diminish its effects. This medication should be taken with a full glass of water unless your doctor tells you otherwise. You should swallow the drug whole.

Your dosage is based on your medical condition and the way you will respond to treatment. Take this drug regularly to experience the most benefits. You should also take this drug at the same time each day.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.


Morphine Sulfate may interact with medications such as:

  • Mixed narcotic agonists or antagonists such as:
    • Pentazocine
    • Nalbuphine
    • Butorphanol for pain
  • Narcotic antagonists such as:
    • Naltrexone
  • Cimetidine
  • Quinidine
  • Rifampin
  • Alcohol
  • Allergy or cough-and-cold products
  • Anti-seizure drugs such as:
    • Phenobarbital
  • Medicine for sleep or anxiety such as:
    • Alprazolam
    • Diazepam
    • or Zolpidem
  • Muscle relaxants
  • Other narcotic pain relievers such as:
    • Codeine
  • Psychiatric medicines such as:

Side Effects:

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to morphine
  • Brain disorders
  • Breathing problems
  • Kidney disease
  • Liver disease
  • Mental or mood disorders
  • Personal or family history of drug or alcohol abuse
  • Gastrointestinal problems
  • Difficulty urinating
  • Pregnancy or lactation